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HSI Final Test Questions and answers rated A+ 2024/2025
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HSI Final Test QuestionsThe preliminary response to a frequency deviation is due to which of the subsequent
1. Load / frequency response
2. AGC
three. Governor action
four. Interchange schedules
•3 and four
•1 and 2
•2 and 3
•1 and 3 - ANS•1 and 3
EMS and AGC have failed at 12:25 and era ought to be controlled manually. The operator
calculates ACE to be +25 MWs. Load is anticipated to boom one hundred MWs, and imports will
boom by means of seventy five MWs at the pinnacle of the hour. What ought to the operator do?
•Maintain contemporary era degree
•Decrease era by using 25 MWs
•Decrease technology through 50 MWs
•Increase generation by means of 25 MW - ANS•Decrease technology with the aid of 25 MWs
How is the Frequency Response Measure (FRM) of a Balancing Authority decided?
•lt is the common of the BA's frequency response for all the frequency deviations of the
preceding 12 months
•lt is the change inside the BA's Net Interchange Actual for the most important frequency
deviation at some stage in the previous year
•lt is the previous 12 months's Control Performance Standard 1 ( CPS1 ) rating
•It is the median of the BA's frequency response for the frequency deviation events recognized
by way of NERC for the previous 12 months - ANS•It is the median of the BA's frequency
reaction for the frequency deviation events identified via NERC for the previous 12 months
Sufficient Operating Reserve is defined because the potential required to fulfill what?
•DOE specs
•CPS and DCS
•CPS 1 & 2 only
•Capacity Standard - ANS•CPS and DCS
In your Interconnection , a generator tripped that changed into massive enough to reduce the
frequency from 60.00 Hz to 59.Ninety four Hz . Your Balancing Authority's Frequency Bias is
,-two hundred MW / zero.1 Hz . How many MW would your system to begin with make
contributions to frequency support?
•a hundred and twenty MW
•eighty MW
•one hundred MW
•200 MW - ANS•120 MW
Interconnection frequency is fifty nine.Eighty Hz . Your ACE is a huge negative fee and your
AGC is pulsing your units down . What have to you do
•Leave AGC in operation however investigate
•Place AGC in steady frequency control
•Place AGC in flat tie line manipulate
•Suspend AGC and investigate - ANS•Suspend AGC and inspect
When a Balancing Authority's ACE fee is the equal signal as the frequency deviation , which
NERC manipulate overall performance score is affected negatively
•DCS
•CPS 1
•TEC
•BAAL - ANS•CPS 1
Correct Of the following , which manipulate machine might be stricken by a difference in Net
Actual Interchange and Net Scheduled Interchange
•Reactive Control
•Turbine Governor Control
•Automatic Generation Control
•Automatic Voltage Regulator - ANS•Automatic Generation Control
Balancing Authority A is presently reading a machine frequency of fifty nine.98 Hz . Its Net
Actual Interchange is +a hundred MW and its Net Scheduled Interchange is +one hundred MW .
If Balancing Authority A's frequency bias setting is 100 MW / zero.1 HZ , what is ACE
• -20
•20
•2
•0 - ANS• -20
A Balancing Authority has twenty gadgets on governor manipulate . The units have special
capacities that variety from 2 hundred MW to 1000 MW and slump settings from 2 % to five % .
, The largest modifications in megawatt output in response to a frequency disturbance may be
provided by way of gadgets which have _______________?
•big ability and small hunch placing
•big capability and huge hunch putting
•small ability and small droop putting
•small capacity and large stoop putting - ANS•huge capability and small slump placing
Balancing Authority A is scheduled to import 300 MW however is most effective uploading 260
MW . Interconnection frequency is fifty nine.94 and Balancing Authority A's Frequency Bias
Setting is -a hundred and twenty MW / zero.1 Hz What is Balancing Authority A's ACE studying?
• -32 MW
• +32 MW
• 0 MW
• -112 MW - ANS• -32 MW
Which of the subsequent is used to calculate a Balancing Authority's every year Frequency
Response Obligation (FRO)
•The Balancing Authority's percentage of the Interconnection's era and cargo
•The Balancing Authority's common Frequency Bias Setting for the preceding 12 months
•The Balancing Authority's average ACE for the preceding yr
•The trade within the Balancing Authority's Net Interchange Actual for a frequency deviation of
.1 Hz - ANS•The Balancing Authority's percent of the Interconnection's era and cargo
If the frequency bias setting is much less bad than the frequency response of a Balancing
Authority and a frequency decline is as a result of a sudden lack of technology in an external
balancing vicinity , what is going to be the end result?
•The ACE will be a bad cost and AGC will boom technology
•The ACE may be a positive value and AGC will lower technology
•The ACE may be 0 and will take no AGC action
•This will not affect the ACE - ANS•The ACE could be a wonderful value and AGC will lower era
Once a Balancing Authority informs the Reliability Coordinator of future or cutting-edge Capacity
and Energy Emergencies , it is the responsibility of the to mitigate the emergency condition?
•Reliability Coordinator and Balancing Authority
•Transmission Owner
•Transmission Operator
•Balancing Authority - ANS•Reliability Coordinator and Balancing Authority
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